The game looks just great and really fun, but it has some shortcomings: 1. You can not get apartments / houses like in San Andreas buy. Overall, there are only two houses in the game, but you can always use only one. 2. There are no garages where you can park your car, just a car park in front of the house, take care of the maximum 2 cars and a motorcycle. Not more. Here I miss the opportunity to leave as in San Andreas multiple vehicles. 3. The control is sometimes a bit annoying, but otherwise very well implemented. 4. No AUTOTUNING like in San Andreas 5. No possibility to change his hairstyle, no tattoos, only clothes can be changed. ...
But there are also many new features that I find super: 1. Graphics 2. Much is much more realistic (eg better physical forces) 3. The textures are great. 4. Internet cafes, restaurants, bowling, darts, billiards, bars, etc. 5. Friends with whom you can do something. 6. Navi with deportation 7. Autosave ...
Conclusion: GTA 4 has many great new features, but also much of what the developers have simply weggelasen.